Door locking mechanism

ABSTRACT

A locking system for an enclosure, including a control bracket mounted to a door of the enclosure and configured to slide in a longitudinal direction along a guide rod running through a pin bracket of the control bracket. The control bracket further includes a latching pin to secure the door of the enclosure. A handle mechanism has a push rod that causes the control bracket to slide along the longitudinal direction, also causing the latching pin to move into a position that secures the door.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation of U.S. patent application Ser. No.15/179,590, filed on Jun. 10, 2016, the disclosure of which isincorporated by reference herein in its entirety.

FIELD OF INVENTION

This disclosure relates to locking mechanisms for doors. The disclosedlocking mechanisms can be used for arc resistant switchgears for powerdistribution and control applications. The disclosure further relates tosafety features for locking mechanisms.

BACKGROUND

Locking mechanisms for known enclosure systems require a door that canbe sealed and locked. For example, such locking mechanisms areconfigured to be used underwater or in the upper atmosphere. In otherexamples, locking mechanisms can be used for switchgears. The term“switchgear” refers to a combination of one or more electricaldisconnect switches, fuses, or circuit breakers. Switchgears can behoused within a contained enclosure to isolate components or groups ofcomponents. Switchgears may be used for control and distribution ofmedium voltage circuits, main-main automatic transfer, main-tie-mainautomatic transfer, main service disconnect and switching, protection oftransformers, motors, generators, feeder circuits, and capacitor banks.In applications where switchgears are used, arc faults may occur betweenelectrical connections, threatening safety of those nearby. An arc faultis a discharge of a high amount of electricity between two conductors,which creates large amounts of explosive heat called an arc blast. Thearc blast can cause severe or even fatal injury to people in proximityof the switchgear, especially operators.

Favorable safety features include a latching system that ensures theswitchgear enclosure is safely closed with minimal room for operatorerror, and indicators that alert an operator when the cabinet is notsafely closed.

SUMMARY

In one embodiment, a locking system for an enclosure includes a controlbracket having a main body defining a main body plane and a pin bracketdefining a pin bracket plane. The control bracket is configured to slidealong a control bracket axis in the main body plane. The main body planeis perpendicular to the pin bracket plane. The pin bracket has first andsecond through holes extending through the pin bracket. The lockingsystem further includes a guide rod extending through the first throughhole of the pin bracket and a latching pin extending through the secondthrough hole of the pin bracket. The locking system also includes alocking flange adjacent the latching pin, a handle having a push rodconfigured to engage with the control bracket, and an indicator thatprovides a notification to a user when the latching pin has engaged thelocking flange.

In another embodiment, a locking system for an enclosure includes acontrol bracket having a main body and a pin bracket. The pin brackethas first and second through holes extending through the pin bracket.The locking system further includes a guide rod extending through thefirst through hole of the pin bracket and a latching pin extendingthrough the second through hole of the pin bracket. The locking systemalso includes a roller rotatably connected to the control bracket and acam bracket. The cam bracket includes a two-stage cam having a rampportion and a plateau portion, configured to receive the roller. Thelocking system further includes an indicator that provides anotification corresponding to whether the roller is engaged with theplateau portion, the ramp portion, or not in contact with the two-stagecam.

In yet another embodiment, a locking system for an enclosure has anenclosure opening on one side and a locking flange having a lockingflange through hole extending therethrough. The locking system includesa door hingedly attached to the enclosure at a side of the enclosureopening and a control bracket mounted to the door and configured toslide along a control bracket axis. The locking system further includesa handle and a handle mechanism mounted to the door. The handlemechanism is configured to cause the control bracket to slide along thecontrol bracket axis when the handle is rotated. The locking system alsoincludes a two-stage cam mounted to the enclosure. The two-stage cam hasa ramp portion leading to a plateau portion. The locking system alsoincludes a roller rotatably mounted to the control bracket andconfigured to engage the ramp portion and the plateau portion of thetwo-stage cam. The locking system further includes a latching indicatorthat provides a notification that the door is securely closed when theroller is in contact with the plateau portion of the two-stage cam.

BRIEF DESCRIPTION OF THE DRAWINGS

In the accompanying drawings, structures are illustrated that, togetherwith the detailed description provided below, describe exemplaryembodiments of the claimed invention. Like elements are identified withthe same reference numerals. It should be understood that elements shownas a single component may be replaced with multiple components, andelements shown as multiple components may be replaced with a singlecomponent. The drawings are not to scale and the proportion of certainelements may be exaggerated for the purpose of illustration.

FIG. 1 is an isometric view of one embodiment of the inside of a door;

FIG. 2 is an isometric view of the control brackets, handle, and pinsused for the door of FIG. 1;

FIG. 3 is a perspective view of the inside of the door of FIG. 1;

FIG. 4 is a detail view of one embodiment of a roller and cam for thedoor of FIG. 1;

FIGS. 5A-5C are perspective, top, and front views of the cam of FIG. 4,respectively;

FIG. 6A is a top view of a U-shaped bracket and locking flange accordingto the embodiment of FIG. 1, shown at a time when the roller is notengaged with the cam;

FIG. 6B is a cross sectional view of a U-shaped bracket, locking flange,and latching pin of FIG. 6A;

FIG. 7A is a top view of a U-shaped bracket and locking flange accordingto the embodiment of FIG. 1, shown at a time when the roller is engagedwith an edge of a plateau portion of the cam;

FIG. 7B is a cross sectional view of a U-shaped bracket, locking flange,and latching pin of FIG. 7A;

FIG. 8A is a top view of a U-shaped bracket and locking flange accordingto the embodiment of FIG. 1, shown at a time when the roller is engagedwith a middle of the plateau portion of the cam;

FIG. 8B is a cross sectional view of a U-shaped bracket, locking flange,and latching pin according of FIG. 8A;

FIG. 9A is a front view of the cam and roller corresponding to theembodiment of FIGS. 6A and 6B;

FIG. 9B is a front view of the cam and roller corresponding to theembodiment of FIGS. 7A and 7B;

FIG. 9C is a front view of the cam and roller corresponding to theembodiment of FIGS. 8A and 8B;

FIGS. 10A-10D are isometric views of exemplary metal control linkagesfor the door of FIG. 1;

FIG. 11A is a detail view of one embodiment of a latching pin and guiderod in a latched;

FIG. 11B is a detail view of the latching pin and guide rod of FIG. 11Ain an unlatched position;

FIGS. 12A-12C are detail views of one embodiment of a visual indicatorin various positions;

FIGS. 13A and 13B are detail views of an electronic indicator that canbe used with the door of FIG. 1; and

FIG. 14 is a schematic drawing of one embodiment an enclosure having anopening.

DETAILED DESCRIPTION

FIG. 1 shows the back side of the fully assembled door 100 with lockingsystem 110 installed. Door 100 can be used for a number of enclosures,for example: a safe, an underwater enclosure, an upper atmosphereenclosure, or any other type of enclosure where a tight locking seal isrequired. Switchgears contain volatile and sensitive electricalcomponents, and require such a tight locking seal to prevent operatorinjury. While not shown in the drawings, the switchgear door 100 ishingedly connected to a switchgear enclosure (also referred to as anenclosure) that contains one or more electrical components. Theenclosure can contain, for example, electrical disconnect switches,fuses, or circuit breakers. Locking system 110, when properly engaged,seals the door to the switchgear enclosure sufficiently to meet the IEEEstandards C37.20.2 and C37.20.7.

FIG. 2 shows the locking system 110 in isolation from the door 100.Locking system 110 includes control brackets 120, guide rods 130, pins140, force transfer brackets 150, and handle 160. FIG. 3 shows thelocking assembly 110 installed on door 100. The door 100 and lockingsystem 110 will be described below with respect to FIGS. 1-3.

In the illustrated embodiment, four control brackets 120 are provided,each control bracket 120 having two latching pins 140. Control brackets120 can be formed of sheet metal, or molded metal in alternativeembodiments. The control brackets 120 can be stamped, laser cut, orpunched from sheet metal. Latching pins 140 are made of steel ofsufficient properties to withstand the expected forces applied to thedoor 100.

In alternative embodiments, the latching pins can be plastic orcomposite materials, depending on the parameters for the specificapplication.

Control brackets 120 are mounted to door 100 and slide along theirrespective control bracket axes, which are defined as a longitudinalaxis of each control bracket 120. The two control brackets 120 vadjacent to handle 160 are shown as being oriented in a verticaldirection, and are therefore referred to as vertical control brackets120 v. The longitudinal axes of the vertical control brackets 120 vextend from the top of FIG. 2 to the bottom of the FIG. 2. The remainingtwo control brackets 120 h are shown as being oriented in a horizontaldirection, and are therefore referred to as horizontal control brackets120 h. The longitudinal axes of the horizontal control brackets 120 hextend perpendicular to the longitudinal axes of the vertical controlbrackets 120 v. The vertical control brackets 120 v are configured toslide vertically along their longitudinal axes, while the horizontalcontrol brackets 120 h are configured to slide horizontally along theirlongitudinal axes. It should be understood that the terms “vertical” and“horizontal” are merely used for convenience to describe the componentsas they are oriented in this illustrated embodiment. The door 100 andits components may be mounted in any desirable orientation.

Control brackets 120 are mounted to the door via the guide rods 130,which are fixed to the door 100, and force transfer brackets 150, whichare pivotally fixed to the door. Alternative methods for attaching thecontrol brackets 120 include using spacers with screws or brackets withslots to guide the control brackets 120 along their longitudinal axeswith respect to the door 100.

In alternative embodiments (not shown), a different number of controlbrackets, such as three or five, may be used instead of four controlbrackets. In other alternative embodiments (not shown), a single guiderod can be used to connect the two vertically oriented control brackets.In other alternative embodiments (not shown), some or all of the controlbrackets can include a different number of latching pins, such as one orthree latching pins. The number of latching pins may affect whether thedoor meets the IEEE standards referenced above.

The two control brackets 120 v mounted vertically, as seen in FIGS. 1and 2, may each have a separate guide rod 130 or a common guide rod (notshown). The control brackets 120 h oriented horizontally along a top andbottom edge of door 100 each have their own guide rod 130. The guiderods 130 are fixed with respect to the door and latching pins 140 arefixed with respect to control brackets 120 h, 120 v, and move with theirrespective control brackets 120.

The locking system 100 is controlled by a handle mechanism 200. Thehandle mechanism 200 contains gears that cause push rods 210 to beextended or retracted when handle 160 is turned. Push rods 210 are fixedto push extension 220 located on the vertical control brackets 120 v.When handle 160 is turned in a first direction, the push rods 210 extendand push the push extensions 220 and the vertical control brackets 120 vaway from the handle mechanism 200. When handle 160 is turned in asecond direction opposite the first direction, the push rods 210retract, causing the vertical control brackets 120 v to move towards thehandle mechanism 200.

In other alternative embodiments (not shown), the handle mechanism canbe replaced with any other mechanical structure that effect a movementof the control brackets 120, such as a cam assembly or other linkage.

Force transfer brackets 150 in this embodiment take the shape of rightangles, and are pivotally connected at three points, as can best be seenin FIG. 3. A first end of the transfer bracket 150 is pivotallyconnected to a vertical control bracket 120 v and a second end of thetransfer bracket 150 is pivotally connected to an adjacent horizontalcontrol bracket 120 h. The elbow of the force transfer bracket 150 ispivotally connected to the door 100. Thus, when the vertical controlbracket 120 v translates in the vertical direction, it pushes or pullsthe first end of the transfer bracket 150, causing the force transferbracket 150 to pivot about its elbow. The pivoting of the force transferbracket 150 about its elbow causes the second end of the force transferbracket 150 to push or pull the horizontal control bracket 120 h. Forcetransfer bracket 150 can be connected to the control brackets 120 h, 120v by pins, bolts, or any other fastener that permits a pivotal movement.

In alternative embodiments (not shown), other fasteners can be used totranslate the vertical movement of the vertically oriented controlbrackets into a horizontal movement of the horizontally oriented controlbrackets. Such alternative fasteners may include linkages or gearassemblies.

Latching pins 140 and guide rods 130 are configured to extend intoU-shaped brackets 170 via through holes located in the U-shaped brackets170. U-shaped brackets 170 are mounted to the door 100, with the throughholes being aligned with guide rods 130 and latching holes 140. Guiderods 130 extend through the through holes in U-shaped brackets 170, andare not withdrawn from the through holes as the respective controlbracket 120 moves. Latching pins 140 can be inserted and withdrawn fromthe through holes in respective U-shaped brackets 170 as the controlbrackets 120 h, 120 v are moved along their respective longitudinalaxes.

Rollers 180 are rotatably connected to the two vertically orientedcontrol brackets 120 v via a spindle. Rollers 180 each have acylindrical contact portion that is configured to be engaged with atwo-stage cam 190 mounted to the enclosure, when vertical controlbrackets 120 v are moved along their control bracket axes. Rollers 180can be made from bronze, plastic, or any other material that permits itto roll along two-stage cam 190.

A more detailed view of the roller 180 and cam 190 is shown in FIG. 4.Control bracket 120 v includes a roller flange 230 that extends towardsan interior of the enclosure. Roller 180 is rotatably mounted to rollerflange 230 via a spindle 240 that extends into a through hole in rollerflange 230. Roller 180 also includes a contact portion 250 that isdesigned to be in contact with, and roll along, portions of cam 190.

Cam (also referred to as cam bracket) 190 includes a ramped portion 260,a plateau portion 270, and a fixing portion 280. The ramped portion 260and plateau portion 270 are designed to engage with the contact portion250 of roller 180. Fixing portion 280 connects the cam 190 to an innerside of the enclosure, in close proximity to the enclosure opening. Inthis embodiment, fixing portion 280 has two through holes that receivebolts or screws (not shown) to connect cam 190 to the enclosure. Inalternative embodiments (not shown), the fixing portion 280 can beconnected to the enclosure with an adhesive, can be welded on, or can bemade integral with the enclosure. In other alternative embodiments (notshown) the cam can include just a ramped portion, and omit the plateauportion.

When vertical control brackets 120 v are moved along the vertical axis,the roller 180 is moved from a first position where it is not in contactwith the cam 190 to a second position where it is engaged with theramped portion 260. When the cam 190 is in the second position, the door100 moves into contact with the gasket around the periphery of theenclosure opening. As the roller 180 moves up the ramped portion 260,the roller 180 moves inward toward the enclosure, drawing in the controlbracket 120 v and door 100, which are fixed with the roller 180. As theroller 180 moves farther up the ramped portion 260, the door compressesthe gasket until it forms a seal. In one embodiment, the door compressesthe gasket, to seal the door, sufficiently to prevent gasses fromescaping the enclosure during an arc fault. The cam 190 and U-shapedbracket 170 are configured such that when the roller 180 reaches theplateau portion 270, the latching pins 140 (which move linearly withroller 180 by virtue of both being fixed to the control bracket 120 v)move into and through the through holes of the U-shaped brackets 170 andthrough the locking flange 340 (as seen in FIGS. 6A-9C), securing thedoor 100.

FIGS. 5A-5C illustrate various views of the cam 190, including thefixing portion 280, the ramped portion 260, and the plateau portion 270.FIG. 5A is an isometric view, FIG. 5B is a front perspective view, andFIG. 5C is a top perspective view.

FIGS. 6A, 7A, and 8A illustrate top views of the components involvedwith latching the door during the stages of the latching process. FIGS.6B, 7B, and 8B are the cross section views along lines 6B, 7B, 8B,respectively, of the bracket 170, locking flange 340, and latching pin140 during stages corresponding to those shown in FIGS. 6A, 7A, and 8A.FIGS. 9A, 9B, and 9C are front views of the roller 180 and cam 190during stages corresponding to those shown in FIGS. 6A, 7A, and 8A,respectively.

The stages are caused by a user turning handle 160 to move thecomponents as described above. FIG. 9A illustrates the cam 190 at astage where the roller 180 is disengaged from the cam 190. At thisstage, the through hole of locking flange 340 is misaligned with thethrough holes in the U-shaped bracket 170, and the latching pin 140 iscompletely removed from the through holes of U-shaped bracket 170, asseen in FIGS. 6A and 6B. At this stage, the door 100 has not fullycompressed the gasket of the enclosure (which is effected via the roller180 rolling up ramped portion 260), so the distance between the door 100and enclosure opening is greater than what the distance will be when thedoor 100 is locked.

FIG. 9B illustrates the same view during the stage where the roller 180is in contact with ramped portion 260 of cam 190. At this stage, thethrough holes of the locking flange 340 and U-shaped bracket 170 arealigned, and the latching pin 140 extends through just one through holeof the U-shaped bracket 170, as seen in FIGS. 7A and 7B. In alternativeembodiments (not shown), the latching pin 140 could be entirely outsideof the through holes of U-shaped bracket 170 at this stage, if desired.

FIG. 9C illustrates the same view during the stage where the roller 180is in contact with plateau portion 270 of cam 190. At this stage, thethrough holes of locking flange 340 are aligned with the through holesof U-shaped bracket 170, and the latching pin 140 extends through thethrough holes of both the locking flange 340 and the U-shaped bracket170, as seen in FIGS. 8A and 8B. At this stage, the door 100 is securelylocked and the enclosure is sealed.

FIGS. 10A-10D illustrate isometric views of four exemplary embodimentsof control brackets 120 v, 120 h. FIGS. 10A and 10B are the verticallyaligned control brackets 120 v, having roller flanges 230 as discussedabove. The vertically oriented control brackets 120 v (in FIGS. 10A and10B) further each include a main body portion 290 that is parallel tothe respective roller flange 230. The main body portions 290 ofvertically aligned control brackets 120 v define main body planes 300.The horizontally aligned control brackets 120 h, shown in FIGS. 10C and10D, also include main body portions 290 that define main body planes300.

All control brackets 120 include pin brackets 310, each pin bracket 310having two through holes to receive a latching pin 140 and a guide rod130. The pin brackets 310 define a pin bracket plane 320, which isperpendicular to main body plane 300. The roller flange 230 furtherdefines a roller flange plane 330, which is parallel to the main bodyplane 300 and perpendicular to the pin bracket plane 320.

FIG. 11A illustrates a detail view of the guide rod 130 and latching pin140 fixed to the pin bracket 310 and extending through the U-shapedbracket 170 in a latched position. In this position, the U-shapedbracket 170 is positioned around locking flange 340, and the latchingpin 140 extends through a through hole in locking flange 340 as well asthrough the two through holes of U-shaped bracket 170. The lockingflange 340 is fixed to the enclosure, and thus prevents the door 100from opening when latching pin 140 extends therethrough.

FIG. 11B illustrates the same detail, but in a position where thelatching pin 140 is disengaged from the U-shaped bracket 170,corresponding to an open position of the handle 160.

FIGS. 12A-12C depict an embodiment for an indicator assembly for usewith the system (or any alternatives of the system) described above. Theindicator assembly in this embodiment includes a transparent window 350,located in the door 100 near a control bracket 120 v, and two tags 360,370 that indicate whether the door is fully latched. Transparent window350 can be made from polycarbonate, or alternatively safety glass. Thetags 360, 370 are affixed to the control bracket 120, and are spacedapart so that the first tag 360 is displayed when the control bracket120 v is in a position where the roller 180 is not engaged with cam 190,corresponding to a configuration where the door 100 is unsecured. Thisstage is shown in FIG. 12A. Both tags 360, 370 are partially visiblethrough the window 350 when the control bracket 120 v is in a positionwhere the roller 180 is engaged with the ramped portion 260 of cam 190,but before the door 100 is fully and securely latched. This stage isshown in FIG. 12B. In this configuration, a user may not be able to tellthat the door 100 isn't fully latched by pulling on it—the door 100 mayremain closed if a user exerts a pulling force on the handle 160, butthe door 100 at this stage is not secured according to IEEE standardsC37.20.2 and C37.20.7. FIG. 12C depicts a configuration where the roller180 is engaged with the plateau portion 270 of cam 190, whichcorresponds to a stage where the latching pin 140 extends through thethrough holes of U-shaped bracket 170 and the through hole of lockingflange 340. These indicators notify a user when the door is securelyfastened according to the IEEE standards.

FIGS. 13A and 13B depict an alternative indicator assembly for use withthe door disclosed above. The indicator assembly depicted in FIGS. 13Aand 13B comprises a microswitch 400 having a microswitch body 410 and asensor 420. The microswitch body 410 is mounted on fixing portion 280 ofcam 190, set at a location where the roller 180 contacts sensor 420 whenit is engaged with the plateau portion 270 of cam 190. When the roller180 contacts sensor 420, the sensor 420 is physically moved inwards intomicroswitch body 410. Electronics (such as a processor or integratedcircuit) within microswitch body 410 respond to the movement of sensor420 and send a corresponding signal that notifies the user of theclosure status of the door 100. The signal may be transmitted throughwires, or it may be a wireless signal. In one embodiment, the signal issent to a display connected to the door or the enclosure. Exemplarydisplays include, without limitation, light emitting diodes, LCDscreens, and touch screens. In an alternative embodiment, the signal issent to an external computer. Exemplary computers include, withoutlimitation, laptop computers, desktop computers, mainframes, cellphones, smartphones, and tablets.

In alternative embodiments (not shown), a different microswitch can beused to detect the position of the roller, such as one that omits asensor that physically comes into contact with the roller. Such amicroswitch could, for example, include a radio frequency identification(“RFID”) sensor that detects an RFID tag located within the roller whenthe roller comes in close proximity to the RFID sensor.

FIG. 14 is a schematic drawing illustrating an enclosure 1400 having anenclosure opening 1410 on one side. A door 100 (such as the doorillustrated in FIG. 1) is hingedly attached to the enclosure 1400 byhinges 1420 a,b at one side of the enclosure opening 1410. A handle 160(such as the handle illustrated in FIG. 2) and a handle mechanism 200(such as the handle mechanism illustrated in FIG. 3) are mounted to thedoor 100. A two-stage cam 190 (such as the two-stage cam illustrated inFIG. 3) is mounted to the enclosure 1400. One or more electricalcomponents 1430 are located inside the enclosure 1400. A gasket 1440 ismounted along a periphery of the enclosure opening 1410. The door 100compresses the gasket 1440 when a roller is moved up a ramp portion ofthe two-stage cam 190, such as shown in FIGS. 9A-B. The enclosure 1400further includes a latching indicator 1450 that provides a notificationthat the door is securely closed when the roller is in contact with aplateau portion of the two-stage cam 190, as further described abovewith respect to FIGS. 12A-C.

To the extent that the term “includes” or “including” is used in thespecification or the claims, it is intended to be inclusive in a mannersimilar to the term “comprising” as that term is interpreted whenemployed as a transitional word in a claim. Furthermore, to the extentthat the term “or” is employed (e.g., A or B) it is intended to mean “Aor B or both.” When the applicants intend to indicate “only A or B butnot both” then the term “only A or B but not both” will be employed.Thus, use of the term “or” herein is the inclusive, and not theexclusive use. See, Bryan A. Garner, A Dictionary of Modern Legal Usage624 (2d. Ed. 1995). Also, to the extent that the terms “in” or “into”are used in the specification or the claims, it is intended toadditionally mean “on” or “onto.” Furthermore, to the extent the term“connect” is used in the specification or claims, it is intended to meannot only “directly connected to,” but also “indirectly connected to”such as connected through another component or components.

While the present disclosure has been illustrated by the description ofembodiments thereof, and while the embodiments have been described inconsiderable detail, it is not the intention of the applicants torestrict or in any way limit the scope of the appended claims to suchdetail. Additional advantages and modifications will readily appear tothose skilled in the art. Therefore, the disclosure, in its broaderaspects, is not limited to the specific details, the representativeapparatus and method, and illustrative examples shown and described.Accordingly, departures may be made from such details without departingfrom the spirit or scope of the applicant's general inventive concept.

What is claimed is:
 1. A locking system for an enclosure, comprising: acontrol bracket having a main body defining a main body plane and a pinbracket defining a pin bracket plane, wherein the control bracket isconfigured to slide along a control bracket axis in the main body plane,wherein the main body plane is perpendicular to the pin bracket plane,wherein the pin bracket has first and second through holes extendingthrough the pin bracket; a guide rod extending through the first throughhole of the pin bracket; a latching pin extending through the secondthrough hole of the pin bracket; a locking flange adjacent the latchingpin; a handle having a push rod configured to engage with the controlbracket; and an indicator that provides a notification to a user whenthe latching pin has engaged the locking flange.
 2. The locking systemof claim 1, wherein the control bracket is made from a single piece offormed sheet metal.
 3. The locking system of claim 1, wherein thecontrol bracket is a first control bracket, and further including asecond control bracket and a force transfer bracket, and wherein a firstend of the force transfer bracket is pivotally connected to the firstcontrol bracket and a second end of the force control bracket ispivotally connected to the second control bracket.
 4. The locking systemof claim 3, wherein the force control bracket translates a motion of thefirst control bracket along the control bracket axis of the main bodyplane into a motion of the second control bracket along a second axisperpendicular to the control bracket axis.
 5. The locking system ofclaim 1, wherein the control bracket further includes a roller flangeand a roller flange plane, wherein the roller flange plane is parallelto the main body plane; and wherein the locking system further includesa roller rotatably connected to the roller flange.
 6. The locking systemof claim 5, wherein the roller is configured to engage a two-stage camaffixed to a switchgear enclosure, the two-stage cam having a rampportion and a plateau portion when the control bracket is translated. 7.The locking system of claim 6, further comprising a U-shaped brackethaving a through hole sized to receive the latching pin, and wherein thelatching pin is configured to selectively engage the through hole of theU-shaped bracket when the roller is in contact with the plateau portionof the two-stage cam.
 8. The locking system of claim 6, wherein theindicator provides a notification to a user when the roller is engagedwith the plateau portion of the two-stage cam.
 9. The locking system ofclaim 1, wherein the indicator includes a transparent window and a pairof movable tags.
 10. The locking system of claim 1, wherein theindicator provides a notification to a user corresponding to whether thelocking system is fully engaged, partially engaged, or not engaged. 11.A locking system for an enclosure, comprising: a control bracket havinga main body and a pin bracket, wherein the pin bracket has first andsecond through holes extending through the pin bracket; a guide rodextending through the first through hole of the pin bracket; a latchingpin extending through the second through hole of the pin bracket; aroller rotatably connected to the control bracket; a cam bracket,wherein the cam bracket includes a two-stage cam having a ramp portionand a plateau portion, configured to receive the roller; and anindicator that provides a notification corresponding to whether theroller is engaged with the plateau portion, the ramp portion, or not incontact with the two-stage cam.
 12. The locking system of claim 11,further including a door, the door having a transparent viewing window;wherein the indicator comprises a first tab located on a first locationof the control bracket and a second tab located on a second location ofthe control bracket; wherein the first tab is visible through thetransparent window of the door when the roller is not in engagement withthe two-stage cam, wherein the first tab and the second tab are bothpartially visible through the transparent window of the door when theroller is in engagement with the ramp portion of the two-stage cam, andwherein the second tab is visible through the transparent window of thedoor when the roller is in engagement with the plateau portion of thetwo-stage cam.
 13. The locking system of claim 11, wherein the indicatorcomprises a microswitch having a body portion, a sensor portion, and acommunication element, and wherein the body portion of the microswitchis mounted to the cam bracket; and wherein the communication elementsends a notification when the sensor portion comes into contact with theroller.
 14. A locking system for an enclosure having an enclosureopening on one side and a locking flange having a locking flange throughhole extending therethrough, the locking system comprising: a doorhingedly attached to the enclosure at a side of the enclosure opening; acontrol bracket mounted to the door and configured to slide along acontrol bracket axis; a handle and a handle mechanism mounted to thedoor, wherein the handle mechanism is configured to cause the controlbracket to slide along the control bracket axis when the handle isrotated; a two-stage cam mounted to the enclosure, the two-stage camhaving a ramp portion leading to a plateau portion; a roller rotatablymounted to the control bracket and configured to engage the ramp portionand the plateau portion of the two-stage cam; and a latching indicatorthat provides a notification that the door is securely closed when theroller is in contact with the plateau portion of the two-stage cam. 15.The locking system of claim 14, further comprising a latching pinmounted to the control bracket, and configured to selectively engage thelocking flange through hole when the control bracket slides along thecontrol bracket axis.
 16. The locking system of claim 15, furtherincluding a guide rod mounted to the control bracket, wherein the guiderod defines a guide rod axis and wherein the latching pin defines alatching pin axis, and wherein the guide rod axis is parallel to thecontrol bracket axis and parallel to the latching pin axis.
 17. Thelocking system of claim 14, further comprising a gasket mounted along aperiphery of the enclosure opening, and wherein the door compresses thegasket when the roller is moved up the ramp portion of the two-stagecam.
 18. The locking system of claim 17, wherein the locking flange isconfigured to fit between the two parallel flanges of the U-shapedbracket, and wherein the locking flange through hole is configured toalign with the two U-shaped bracket through holes.
 19. The lockingsystem of claim 17, wherein the latching pin is configured to extendthrough the two U-shaped bracket through holes and the locking flangethrough hole when the door is closed and the handle is turned.
 20. Thelocking system of claim 14, further comprising a U-shaped bracketmounted to the door, wherein the U-shaped bracket has two parallelflanges that each include two U-shaped bracket through holes extendingtherethrough.